Coil machine



`hlm: 14, i932,

F- C. LINDH COIL MACHINE Filed May 25' 1928 2 Sheets-Sheet 1 pple me 14, i932. l F. c. LINDH LSGZZ@ VFiled May 25, 1928 2 Sheets-Sheet 2 Patented June 14, 1932 Y OFFICE raux c. 1.1mm, or omesso, ILLINOIS con. MACHINE Application led Ray 25,

My invention relates to coil machines. Among the objects of my invention are'to provide an improved method for use in the making of long strips of sheet metal which 6 in the process of manufacture are passed through successive sets of rolls.

To provide an improved method involving winding the strip up into a roll as it comes from a set of rolls, leaving an end un'- rolled and extending away from the body of the roll, and inserting this free end in the next set of rolls.

To provide improved apparatus for carrying out the above methods.

Further objects will appear from the description and claims.

In the drawings in which an embodiment of my invention is shown,

Fig. 1 is a perspective view showing my improved coil machine;

Fig. 2 is a vertical section showing the mounting for the movable roll;

Fig. 3 is a central sectional view through the feed rollers and coiling rollers; Fig. 4 is an end view of the roll made on my improved machine; kand Fig. 5 is an end view of a roll such as would be made if the movable roller were not re-v leased.'

Referring to the drawings in detail, the coil machine shown therein comprises a supporting frame l, a pair of feed rolls 2 mounted thereon, three coil forming rollers 4, 5; and 6, also mounted on the frame, a coil defleeting plate 7, a pair' of coil guiding rollers 8 and 9, and transmission from the drive pulley 10 to the feed rollers 2 and coil forming rollers 4, 5, and 6.

The feed rollers and coil forming rollers are mounted in suitable bearings in the frame. The feed rollers and coil forming rollers are all driven from a single drive gear 11. Transmission from this drive gear to the feed yrollers comprises a gear 12 meshing with the driving gear 11, an idler 13 meshing with this gear 12, and a gear 14 rotatable with the feed roller 2 and driven from the idler 13. The upper feed roller is driven from a. gear on the lower feed roller which drives a gear on the-upper feed roller. The coil forming roll- 1928. Serial No. 280,425.

er 4 secured to rotate with the gear 12. The movable coil forming roller 6 is driven from the gear 11 by means of a gear 15 meshing with the drivmg gear 11, an idler 16 meshing with this gear 15, a second idler 17 mesh- 55 ing with the first idler 16, and a gear 18 rotatable with the movable coil forming roller 6 and meshing with the second idler 17. The coil l:forming roller 5 is rotatable with the drlven gear 15. 00

In operation, the end 19 of the traveling sheet material is inserted between the guide plates 20 and is grasped between the two feed rollers 2 and fed thereby to the coil forming rollers4, 5, and 6 which, because of their c5 design and position, bend the traveling strip into a circular form. At first, the end of this traveling strip strikes the coil guiding plate 7 as indicated in dotted lines at 22, and as the strip continues to be fed 'through the coil 70 forming rollers the circle of the strip increases in diameter until the end iinally slips from the guide pla-te 7 onto the guide roller 8, and thereafter the end is guided by the coil forming roller 6 and the other guide roller 9 to 75 cause the strip to be wound up into a roll 23.

The diameter of the coil may be determined to some extent by an up and down adjustment of the movable roller 6 by means hereinafter described in detail.

In order to facilitate feeding the woundup coil 23 to a succeeding set of rolls, I provide means whereby the tail end 24 of the sheet metal strip 19 may be left unrolled, as shown in Fig. 4, and extending away from the body of the roll so that this free end may be readily inserted into the succeeding set of rolls. The construction by which I am able to accomplish this comprises means whereby the movable forming roller 6 may be readily 90 and quickly released to enable it Jto move away from the pair of coil forming rollers 4 l and 5 on the other side of the strip, the move- `ment of the movable roller being effected by two contributory causes-one, the tension or resiliency of the material of the metal strip being acted on, and the other, the action of the gear 17 whichA envages the driven gear 18 of the movable coil lforming roller.

The release of the movable roller 6 is ef- 100 Vfected by means of a handle 25, controlled by the attendant, which is mounted on a rock shaft 26 having a pair of rock arms 27 secured thereto which through suitable transmission control a pair of cams 28 which normally hold the movable roller 6 down but which when released permit the movable roller 6' to spring quickly to a position in which it will not act to cause the strip of material to be coiled. The transmission from each rock arm 27 to its controlled cam 28 comprises a link 29 pivotally connected to the rock arm 27 and a rock arm 30 pivotally connected with this link 29 and mounted on a rock shaft 31 on which the cam 28 is mounted. This cam in the position shown in Fig. 3 holds the movable coil forming roller 6 down in coil forming position, but when the cam is moved through substantially 90 it no longer acts to hold the movable roller 6 down but permits this roller to spring upwardly under the combined action of the resilient strip of material and the driving gears. The roller 6 is mounted for vertical movement in a pair of bearing members 32 which may shift up and down in suitable guide openings 33 in the frame 1 when permitted to do so by the controlling cams 28. Each of these bearings 32 is adjustable for controlling the diameter of the roll to be formed by means of a screw adjustment comrising an externally threaded sleeve 34 havlng a swivel connection with the bearing 32, an adjusting nut 35 threaded on this sleeve, and an adjusting screw 36 bearing on the upper side of the bearing 37 in which the rock shaft 31 is mounted and threaded into the upper pJart of the supporting frame 1.

The earing 32 of the roller 6 has a sliding and swivel connection with the adjusting sleeve 34 by means of a pin 38, the head 39 of which has a swivel connection with the bearin 32 and the upper end of which pin has a s .ouldered engagement with the shoulder 4() on the adjustable sleeve 34. The length of this pin is such that it may have some up and down movement in the adjustable sleeve 34 when permitted to do so by the controlling cam 28. The swivel connection between the pin 38 and lower bearing 32 is eected by means of two half bearing members 41 secured to the bearing 32 by the cap screws 42, which half bearings 41 between them embrace the head and neck of the lower end of the pin 38. f

The shouldered engagement of the upper end of the pin 38 with the adjustable sleeve 34 is effected by means of a pair of semicircular sleeves or bushing members 43 which between them embrace the neck portion 44 of the upper end of the pin 38 and which alle seated in the circular recess in the upper end of the sleeve 34. The sleeve is adjusted by means of the spanner nut 35 having a threaded engagement with the upper end of the sleeve 34 and bearing on the shoulder portion 45 of the frame 1.

The setting of the movable coil forming roller 6 is effected by means of the threaded sleeve 34 and screw V36 while the quick release for leaving the end of the roll uncoiled is effected by means of the quick release of the cam 28.

In adjusting the bearings 32 to determine the diameter of the roll to be formed, the screw 36 is loosened up suiliciently toy enable the desired adjustment to be made and the adjusting nut 35 is then turned in one direction or the other to adjust the sleeve 34 to properly position the roller 6. The screw 36 is then tightened down to clamp the upper bearing 37 snugly against the upper end of the sleeve 34 and thus clamp the nut 35 snugly against the shoulder portion 45 of t-he frame.

In use, the attendant will be on the lookout for the approach of the end of the strip and when the strip has reached the point beyond which no further coiling action should take place the attendant quickly shifts the lever 25 to release the movable coil forming roller 6 which under the spring action of the strip of material acted on and the lifting action of the driving gears 17 will spring quickly to non-coiling position so that the rest of the strip will not be. wound snugly on the coil but will stand out therefrom leaving an end which can be readily inserted into a succeeding set of rolling-mill rolls.

While I have described but one embodiment of my invention, it is obvious that many modifications therein may occur to those skilled in the art, and I desire, therefore, that my invention be limited only by the scope of the appended claims and by the prior art. Y

I claim:

l. A coil machine having means for coiling a sheet metal strip so as to leave a rojecting end extending outwardly from tiie body of the roll, comprising three coiling rollers, two on one side of the sheet and one on the other, means for holding said rollers in position to cause the sheet to be bent to form a coil as it passes through the rollers, and means whereby atleast one of said rollers may be' readily and quickly moved to such a posltion that the remainder of the sheet will not be snugly wound on the coil comprising a driven gear rotatable with said movable roller and a driving gear meshing with said driven gear and acting in a direction to move said roller to non-ceiling position.

2. A coil machine having means for coiling a sheet metal strip so as to leave a projecting end extending outwardly from the body of the roll comprising three coiling rollers, two on one side of the sheet and one on the other, means for holding said rollers in position to cause the sheet to be bent to form Y coil as it passes throu h l coil.

lually operable means a coil as it passes throu h the rollers, comfrom vthe body of the coil to facilitate feedthe coil to a succeeding set of rolls.

prising a pair of space bearings in which one of said rollers is mounted, means whereby said bearings are movably mounted, and means positively connecting with said bearings whereby said bearings ma be readily and substantially instantaneous y caused to move to such a position that the remainder of the sheet will not be snugly wound on the 3. A coil machine having means for coiling a sheet metal strip so as to leave a projecting end lextending outwardly from the body of the roll comprising three coiling rollers, two on one side of the sheet and one on the other, means for holding said rollers in position to cause the sheet to be bent to form a the rollers, fcomprising a pair of spaced arings in which one of said rollers is mounted, means whereby said bearings are movably mounted, and manositivcly connecting with said bearings w ereby said bearings may be readily and substantially instantaneously caused to move to 4such a position that the remainder of the sheet will not be snugly wound on the coil.

4. A coil machine having means for coiling a sheet metal strip so as to leave a projecting end extending outwardly from the body of the roll comprising three coiling rollers,

two on one side of the sheet and one on the other, means for holding said rollers in position to cause the sheet to be bent to form a coil as it passes through the rollers, comprising a pair of spaced bearings in which one of said rollers is mounted, means whereby said bearings are movably mounted, and manually operable means directly connected to said bearings whereby said bearings may be readily and substantially instantaneously caused to move to such a position that the remainder of the sheet will not be snugly wound on the coil. n

5. A coil machine having means for coiling a sheet metal strip so as to leave a projecting end extending outwardly from the body of the coil comprising three coilingI rollers, two on one sidey of the strip 'and one onl the other, means for holding said rollers in position to cause the strip to be bent as it passes through the rollers, guide means for guiding said strip after it has passed through said rolls and forming it into a coil having an open center, and means whereby at least one of said rollers may be readily and substantially instantaneouslymoved to such a position that the remainder of the strip will not be bent substantiall said guide means being positioned entire y outside the open center ofthe coil whereby after said roller has moved to non-bending position, the entire coil may move bodily in the direction of the feeding movement of the strip, so that a straight end of the strip may be left extending outwardly ln witness whereof scribed my name.

, I have hereunto subics 

